.manual-hero {
  position: relative;
  overflow: hidden;
  padding-top: 76px;
  padding-bottom: 68px;
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(90deg, transparent, var(--color-glow-faint), transparent),
    var(--color-bg);
}

.manual-hero::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border-soft) 1px, transparent 1px);
  background-size: 48px 48px;
  content: "";
  opacity: .28;
  pointer-events: none;
}

.manual-hero::after {
  position: absolute;
  top: 16%;
  right: 7%;
  width: 28%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  box-shadow: 0 0 22px var(--color-glow-medium);
  content: "";
  opacity: .7;
  pointer-events: none;
}

.manual-hero .reading-wrap {
  position: relative;
  z-index: 1;
}

.manual-hero .eyebrow {
  margin-top: 24px;
}

.manual-hero h1 {
  max-width: 760px;
  margin-top: 14px;
}

.manual-title-muted {
  color: var(--color-text-muted);
}

.manual-lead {
  max-width: 720px;
  margin-top: 24px;
  font-size: 18px;
  line-height: 1.8;
}

.manual-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.manual-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 760px;
  margin-top: 38px;
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.manual-facts li {
  display: grid;
  min-width: 0;
  gap: 4px;
  padding: 16px 18px;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
}

.manual-facts strong {
  overflow-wrap: anywhere;
  font-family: var(--font-mono);
  font-size: 13px;
}

.manual-facts span {
  color: var(--color-text-faint);
  font-size: 12px;
}

.manual-article {
  padding-top: 38px;
  padding-bottom: var(--section-space);
}

.manual-article .toc-tabs {
  top: 10px;
  margin-bottom: 38px;
}

.manual-intro {
  display: grid;
  gap: 16px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-panel);
}

.manual-intro p {
  color: var(--color-text-muted);
}

.manual-chapter {
  padding-top: 56px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border);
}

.manual-chapter:last-child {
  border-bottom: 0;
}

.manual-chapter > * + * {
  margin-top: 18px;
}

.manual-chapter h2 {
  margin-top: 10px;
  margin-bottom: 30px;
}

.manual-chapter h3 {
  position: relative;
  margin-top: 38px;
  padding-left: 16px;
  font-size: 24px;
}

.manual-chapter h3::before {
  position: absolute;
  top: .2em;
  bottom: .2em;
  left: 0;
  width: 2px;
  background: var(--color-accent);
  box-shadow: 0 0 12px var(--color-glow-medium);
  content: "";
}

.manual-chapter p {
  font-size: 16px;
  line-height: 1.9;
}

.manual-chapter .table-scroll {
  margin-top: 26px;
  margin-bottom: 28px;
}

.manual-chapter .callout,
.manual-chapter .promo-block {
  margin-top: 28px;
  margin-bottom: 28px;
}

.manual-chapter pre {
  margin-top: 20px;
  margin-bottom: 20px;
}

.manual-chapter .section-kicker {
  margin-top: 0;
}

.manual-chapter a:not(.btn) {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: var(--color-accent-dark);
  text-underline-offset: 3px;
}

@media (max-width: 768px) {
  .manual-hero {
    padding-top: 54px;
    padding-bottom: 52px;
  }

  .manual-lead {
    font-size: 16px;
  }

  .manual-article {
    padding-top: 24px;
  }

  .manual-article .toc-tabs {
    top: 6px;
  }

  .manual-chapter {
    padding-top: 46px;
  }

  .manual-chapter h3 {
    font-size: 21px;
  }

  .manual-chapter p {
    font-size: 15px;
    line-height: 1.85;
  }
}

@media (max-width: 560px) {
  .manual-hero::after {
    display: none;
  }

  .manual-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .manual-actions .btn {
    width: 100%;
  }

  .manual-facts {
    grid-template-columns: 1fr;
  }

  .manual-intro {
    padding: 18px;
  }

  .manual-chapter h2 {
    margin-bottom: 24px;
  }

  .manual-chapter h3 {
    padding-left: 13px;
  }
}